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Product Advertising API
Developer Guide (API Version 2013-08-01)

Suggest Similar Items to Buy

Similarity is based on items customers bought. (Customers who bought X also bought Y.) This algorithm is different from the one used for items viewed. Basing the algorithm on purchases rather than viewing history returns items that will likely interest customers.

You can use the following operation and response groups to return similar items:

  • SimilarityLookup operation

  • Similarities response group

  • CartSimilarities response group

The Similarities response group returns item IDs that are similar to items in a response. To return additional information for these items, specify the similar item IDs in ItemLookup requests.